Power-transmission attachment.



E. F. ELMBERG.

POWER TRANSMISSION ATTACHMENT.

APPLICATION FILED 050.15. 1911.

1,271,683., Patented July 9,1918,

2 SHEETSSHEET l.

Fig. 1.

Inventor, EEEZmZeT' 5y Aiornay.

E. F. ELMBERG.

POWER TRANSMISSION ATTACHMENT.

APPLICATION FILED DEC. 15. 1917.

Patented July 9, 1918.

2 SHEETSSHEET 2.

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- of said device, and Fig. 5 is a detail view,.

ERNEST F. ELMBERG, 0E PARKERSIBURG, IOWA.

POWER-TRANSMISSION ATTACHMENT.

Specification of Letters Patent.

Patented July 9, 1918.

Application filed December 15, 1917. Serial No. 207,225.

To all whom it may concern:

Be it known that I, ERNEST F. ELMBERG, a citizen of the United States ofAmerica, and a resident of Parkersburg, Butler county, Iowa, haveinvented certain new and useful Improvements in Power-TransmissionAttachments, ofwhich the following is a specification.

My invention relates to improvements in power transmission attachments,and the object of my improvement is to supply mechanism of this type ofa simple and convenient construction adapted for detachable attachmentto the crankshaft of the motor of a motor-vehicle or other prime-mover,and which shall be capable of transmitting power to driven mechanismwith a minimum loss of power. Other objects of my improvements will bemore specifically hereinafter described, pointed out in the claims, andillustrated in the accompanying drawings, in which, where similarnumerals of reference denote corresponding parts,'Figure 1 is a planview of my improved power transmission attachment as connected to adriving-shaft; Fig. 2 is a side elevation of the same, more specificallyshowing the means for adjustably mounting the device on the frame of theprime-mover; Fig. 3 is a fragmental under plan view of the'forward endof the device, showing the cam-controlled adjustable clip thereon; Fig.4 is an end elevation of the releasable ratchet-crank on a magnifiedscale, of said ratchet-crank, as separated from the driven parts of thedevice, with parts sectioned or broken away.

Referring to the drawings, in which the numeral 56 denotes the fixedpart of the front axle of a motor vehicle, 57 the front cross-connectingbar of the frame thereof, and 1 the forward end of the crank-shaft ofthe motor thereof, the numerals 30, 31 and 35 denote the rearwardlydiverging horizontal frame bars of my device and the s aced cross-platesfastened thereto by bolts 3 and 36 respectively. Bars 49 are fastened bybolts 50 to the tops .of the frame-bars 30 to extend rearwardlytherefrom and rest upon the top of the cross-connection 57 to supportthe rear end of the device. Upon the for ward cross-plate 35 a pair ofbars 44 are secured by means of bolts 43 and may be rocked horizontally.for adjusting purposes. On each bar 44 at its rear end isan uprightintegral lug 45 orificed to receive the forward threaded end of a rod 47and secured by a nut 46.

The rear end of each rod 47 is downwardly hooked at 48 to hook-over thetop of sald Gross-connection 57.

Referring now to said Fig. 2, as also to Fig. 3, the numeral 59 denotesa cross-bar secured on the under. face of the forward part of eachframe-bar 30 by means of bolts 36. Secured medially on said bar 59 by abolt 61 is a rearwardly extending bar 60,

medially twisted to present itselfvertically' edgewise and slopingdownwardly and rearwardly and having a medial longitudinal groove andslot 62' on one side. The numeral 63 denotes a rod whose forward end isbent at a right angle at 64 topass through the forward part of the slot62 and secured by a nut to prevent separation from the bar 60 whilepermitting longitudinal movement of said end 64v in said slot. On saidend 64 is pivotally mounted a cam 65, whose edge bears movably againstthe forward wall of an angular lug 70 on the end of the bar 60. Said camhas a handle 66. Another rodpart 68 is connected adjustably to therodpart 63 in alinement b means of a tumbuckle 67, and has at Its rearend an upturned hook 69 adapted to be hooked under the axle-member 56. Achanneled bracebar 52 is connected by means of bolts 53 and 36 at itsrear and forward ends to the rear depending parts 51 of the frame-bars30 and the forward parts of said frame-bars, re-

spectively. An adjustable spacing-bar 55 is secured to the rear face ofeach of thedepending parts 51 by means-of -a screw-bolt 54 to beinterposed between the part 51 and the axle-member.

A socket 3, see Fig. 5, is secured detachably to the forward end of thedriving-.

shaft 1 by means of a pin 2.. Said socket has a diminished hollow shanksecured detachably to the'rear end of a-driven shaft-mom:

ber 5 by means of a pin 4.' On the forward.

fixed a crank 13 supplied with a handle 14,-

and is wide enough to also have secured on it's forward face a block 12.The block 12 has a longitudinal hollow 17 and side openopening on thefront face of the block, and said hollow contains a' plunger-rod orratchet-pawl 18, ashort coiled compressionspring 16 within said hollowbearing down upon said pawl. A lateral pin 19 on th'ef fasten the pawlin its upward position, or release it when the pinis rocked forwardly.The ratchet-crank 13 is intendedlto be permanently mounted with itscarrying;- shaft 5 on jsaid'driving-shaft 1,' and when any of the usualmechanical equivalents,

the frame 30 is removed from the frame of the vehicle, the crank 13remains, and can be .used as a safety crank to crank'up saiddriving-shaft. This is done by sliding the sleeve 6 forwardly on theshaft-member 5 to 1 seat the fixed sleeve 9 partially within the hollow8 of the enlargement 7, so that the -rea'rmost detent 10 will bepositioned to be engagedoby the lower end of the pawl 18, when thelatter .is released and propelled downwardly by said spring 16. Thisengagement permits rotation of the shafts 5 and 1 by means of the crank13, but in the event of the engine back-firing the sloping lower end ofsaid pawlrides up over the detent 10, comp resslng said spring 16, andalso pushes back the sleeve 6 to cause the detent to clear the pawl, dueto the cylindrical form of the detent. When the frame is mounted on thevehicle tobe used as a power transmission attachment thereto, the

universaLcoupling composed of the usualparts 24 to 28 inclusive, thepair of detents is not essential to my invention.

10 passing into a key-slot 22. The coupling-member 28 is secured on therear end vehicle, and that the universal coupling connection thereinpermits considerable play between the coupled. shaft parts as may benecessitated in the operation of adjusting the device in mounting it upor in locating the belt-wheel in a desired plane pawl can. rocktherewith into or out of' the side opening 20 in said block, to therebyrelative to the'machinery driven. The incorporation of the releasablecrank 13 also renders the device more convenient, and is always adaptedfor use by the dismounting of the attachment frame only.

It is intended that this invention cover and that various minor changesmay be made without departing from the principle of the invention.

Having described my invention, what .I claim as new, and desire tosecure by Letters. Patent, isz" 1. In combination, a driving-shaft, adriven shaft element mounted on said driving-shaft, engaging-means onsaid driven shaft element, a crank mounted loosely and longitudinallyslidablyon said driven shaft element, and a yieldableresiliently-controlled-pawl engaging said engaging-means detachably andmounted on said crank, to rotate the shafts when the crank is rotated inone direction only.

.then rotated in one direction, said. pawl of. a shaft-member 29 mountedin a pair of spaced bearing-boxes 32 and 41 fixed on said cross-plates.31 and 35 by means of bolts 37 and 36. The boxes have oil-cups '33 and42 respectively, and may contain roller-bearings about said shaft,though this A stopcollar 34 is secured on the shaft 29 intermediate saidboxes.

Anterior to the frame 30, a belt-wheel 38 is mounted on the shaft 29.The forward end of said shaft has a short longitudinal groove, .58 todetachably receive the hooked end of a removable crank 39 provided witha handle 40, for starting purposes when such power attachment is in use.A belt may be run from-the belt-wheel38 to drive any kind of machineryas desired.

It will be seen that this device may be quickly attachedto or dismountedfrom a riding back over said engaging-means when the connected shaftelements are rotated in a reverse direction and also yieldinglongitudinally reversely to revent rotation of the crank when the sha sare reversely rotated.

3. In combination, a driving-shaft, a driven shaft element mounted onsaid drivingshaft, engaging-means on said driven shaft elementconsisting of a cylindrical detent on said element, a crank mountedloosely and slidably on said driven shaft element, and a yieldableresiliently-con trolled pawl mounted on said crank and engaging saiddetent when the crank. is first moved longitudinally on its shaft-in onedirection and secondly rotated in one direcanother driven shaft element,a universal in one direction, after the universal-con couplingdetachably connected between said driven shaft elements, a frame onwhich said second-mentioned driven shaft element is rotatably mounted, aframe on which said drivingshaft is rotatably mounted, adjustablesupporting connections between said frames, the first-mentioned drivenshaft element having engaging-means adapted to detachably secure it tosaid universal-coupling,

a crank loosely slidably mounted on the first mentioned driven shaftelement and having a yieldable resiliently-controlled pawl mountedthereon and adapted to engage the said engaging-means when theuniversalcoupling is removed, and the crank moved forward longitudinallyon the shaft, to rotate the connected shaft elements in one direction.

5. In combination, a driving-shaft, a driven shaft element mountedthereon, another driven shaft element, a universal coupling detachablyconnected between said drivenshaft elements, a frame on which one ofsaid driven shaft elements is rotatably mounted, a frame on which saiddrivingshaft is rotatably mounted,'adjustable supporting connectionsbetween said frames, the first-mentioned driven shaft element having acylindrical detent thereon, a crank loosely slidably mounted on thefirst-mentioned driven shaft element, a resiliently-controlled pawlmounted movably on said crank to en gage said detent when the crank isrotated pling has been uncoupled from said element, to rotate saidelement in one direction, said pawl yieldably riding over said detentwhen the said shaft element is rotated in a reverse direction.

6. In combination, a driving shaft, a frame on which said driving-shaftis rotatably mounted, an axle supporting said frame, a driven. shaftelement mounted on said driving-shaft, another driven shaft element, auniversal-coupling detachably connecting said driven shaft elements, aframe on which said second-mentioned driven shaft element is rotatablymounted, adjustable clips mounted movably on the last-mentioned frameand having engaging-means adapted to releasably engage thefirst-mentioned frame, the rear end of the last-mentioned frame beingsupported on the firstmentioned frame, and an adjustable clip movablymounted on the last-mentioned frame and having engaging-means adapted toreleasably engage said axle, the rear part of the last-mentioned framebeing bent downwardly and engaging said axle.

7. In combination, a driving-shaft, a frame on which said driving-shaftis rotatably mounted, an axle supporting said frame, a driven shaftelement mounted on said driving-shaft, another driven shaft element, auniversal-coupling detachably connecting said driven shaft elements, aframe on which said second-mentioned driven shaft element is rotatablymounted, adjustable clips mounted movably on the last-men tioned frameand having engaging-means adapted to releasably engage thefirst-mentioned frame, the rear end of the last-mew tioned frame beingsupported on the firstmentioned frame, an adjustable clip movablymounted on the last-mentioned frame and having engaging-means adapted toreleasably engage said axle, the said clip being formed of two parts, aturn-buckle adjustably connecting said parts, said last-mentioned framehaving engaging-means, and a cam mounted on the last-mentioned frame torock thereon in moving engagement w th said engaging-means, saidcamhaving a plvotal connection-to one of the parts of the last-mentionedclip. I V

Signed at Waterloo, Iowa, this 6th day of Dec. 1917,

ERNEST F. ELMBERG.

